fossa for lacrimal sac

例句：

1. 1. The surgeon performed a delicate operation to remove the tumor from the lacrimal fossa.
   外科医生进行了一次精细的操作，将肿瘤从泪腺窝中取出。
2. 2. The patient had to wear a mask during the procedure because of the lacrimal fossa.
   患者在手术过程中不得不戴上口罩，因为涉及到泪腺窝。
3. 3. The doctor explained that the surgery was necessary to relieve the pressure on the lacrimal fossa.
   医生解释说，手术是必要的，以减轻泪腺窝的压力。